Authors

Pingping Zhang

Publications 2

Preprint Open access

ChartBmkAgent: Harness-Governed Multi-Agent Construction of Chart QA Benchmarks from Sparse Error-Taxonomy Specifications

Langxi Huang, Pingping Zhang, Lanyun Zhu et al. · 2026

Multimodal large language models (MLLMs) advance rapidly, while conventional benchmark development lags behind, delaying investigation of newly observed capability gaps. Such investigation requires an expressive task format and an on-demand construction process: information-rich charts make chart question answering (Ch …

Preprint Open access

DiffReID: Discriminative Diffusion Model for Object Re-Identification

Yingquan Wang, Pingping Zhang, Dong Wang et al. · 2026

As a fundamental image processing task, object Re-Identification (ReID) aims to retrieve objects across non-overlapping cameras. Recently, with the development of deep learning, significant advancements have been made in object ReID. However, most existing methods suffer from generalization due to the limited size and …

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